Dr. William Bayer, MD is a Endocrinology, Diabetes & Metabolism Specialist in Carol Stream, IL. Dr. Bayer has more experience with Osteoporosis & Screening, Thyroid Disorders, and Diabetes & Glucose Monitoring than other specialists in his area. He is affiliated with medical facilities Northwestern Medicine Central DuPage Hospital and Edward Hospital - Main Campus. He is accepting new patients and has indicated that he accepts telehealth appointments. Be sure to call ahead with Dr. Bayer to book an appointment.